A product that you applied
yesterday, which you forgot to put more on of
today. But its ok, because you
still have some on from the day before.
Person 1: "Man I forgot to put on deodorant...good
thing i have rollover from yesterday"
Example 2: Girl: "I
left my make-up bag at home, I am going to smear my rollover mascara from yesterday into eye shadow
today."